JP5142201B2 - Zeolite production equipment and power generation equipment - Google Patents

Description

  The present invention relates to a zeolite production apparatus for producing zeolite from coal ash and a power generation facility equipped with the zeolite production apparatus.

  Coal ash generated in large quantities in a thermal power generation facility using coal as an energy source is used as a cement raw material, a roadbed material or the like, but most of the coal ash generated in large quantities is buried as waste. For this reason, in order to use coal ash effectively, various proposals have been made to use it by converting it to zeolite (coal ash zeolite) having an ion exchange function, an absorption function, a catalyst function, and the like (for example, Patent Document 1, 2).

  The conventionally proposed zeolite production technology is to heat the mixture of coal ash and alkali (sodium hydroxide) solution to elute the alumina component and silica component and recrystallize the alumina and silica to coal ash. Zeolite is obtained.

  Specifically, a large amount of alkali solution adjusted to a predetermined concentration and coal ash are mixed, using a plurality of reaction vessels, heating the mixture to a predetermined temperature and reusing the aqueous alkali solution after separating the zeolite. However, a solid-liquid reaction process is performed to produce zeolite (hydrothermal synthesis method).

  In conventional technology using hydrothermal synthesis, even if it is a glassy mixture such as alumina or silica that is easy to solidify, zeolite is produced by repeating heating using multiple reaction vessels while suppressing solidification. be able to. In addition, the alkali-containing liquid used in the production of the zeolite is separated from the solid phase by filtering the zeolite, and added again to the alkali solution for producing the zeolite. Can be used.

  However, since the alumina component and silica component of coal ash are eluted to produce zeolite, it is necessary to devise facilities such as a batch reactor in order to perform continuous production efficiently. is there. That is, a step of adjusting the slurry by mixing coal ash with an alkali-containing liquid, a step of heating the coal ash-containing slurry to elute the alumina component and the silica component of the coal ash, and further containing the coal ash and its eluted component It is necessary to proceed with the zeolitization while suppressing the solidification of the coal ash slurry by performing each of the steps of heating and zeoliticizing the slurry to be performed in separate batch reactors. For this reason, by repeating batch processing while changing reaction conditions such as blending, heating, and mixing of raw materials in multiple reaction vessels, it is possible to perform pseudo continuous production while suppressing solidification, resulting in a large amount of alkali The fact is that they use water. Moreover, since it becomes the equipment of the batch processing by a several reaction container, the equipment became large and complicated, and cost became high. Therefore, the facilities for producing zeolite become large-scale, and the present situation is that a technology capable of generating zeolite from coal ash at low cost is desired.

JP 2005-126263 A JP 2005-126265 A

  This invention is made | formed in view of the said condition, and it aims at providing the zeolite manufacturing apparatus which can produce | generate a zeolite from coal ash with a simple installation.

  Another object of the present invention is to provide a power generation facility equipped with a zeolite production apparatus that can generate zeolite from coal ash with simple facilities.

  In order to achieve the above object, the zeolite production apparatus of the present invention according to claim 1 includes a cylindrical pressure vessel into which coal ash, alkali and water are introduced from one end side, and the pressure vessel is rotated around the axis of the cylinder. Rotating means for moving the mixture to the other end side and discharging the product from the other end, and temperature control means for producing zeolite by reacting the mixture while maintaining the inside of the pressure vessel at a predetermined reaction temperature And solidification preventing means for preventing solidification of the reactant inside the pressure vessel.

  In the zeolite production apparatus of the present invention according to claim 1, the pressure vessel is rotated by the rotating means, the mixture of coal ash, alkali and water is stirred, and the temperature control means generates a zeolite by the temperature control means. The inside is controlled, and the zeolite is discharged from the other end of the pressure vessel in a state in which the solidification prevention means suppresses the solidification inside the vessel. As a result, it is possible to produce zeolite that is easy to solidify by continuous treatment, and it is possible to produce zeolite from coal ash with simple equipment at low cost.

  And the zeolite production apparatus of the present invention according to claim 2 is the zeolite production apparatus according to claim 1, wherein the temperature control means controls the water evaporation state of the mixture to a predetermined temperature, and the product is in an anhydrous state. It is a means for obtaining a zeolite.

  In this invention which concerns on Claim 2, a zeolite can be produced | generated without a wastewater with the minimum alkali and water, and a waste_water | drain process and a sludge process can be abbreviate | omitted.

  Further, the zeolite production apparatus of the present invention according to claim 3 is the zeolite production apparatus according to claim 1 or 2, wherein the solidification preventing means is a large number of ceramic balls placed in a pressure vessel, The ceramic ball is moved by the rotation of the pressure vessel by the means, so that the mixture is crushed and stirred, and the outlet side of the pressure vessel is provided with a collecting means for capturing and collecting only the ceramic ball. Features.

  In the present invention according to claim 3, since many ceramic balls are moved by the rotation of the pressure vessel and the mixture is crushed and stirred, the solidification of the mixture and the prevention of adhesion to the inner wall of the pressure vessel are crushed and This can be done during stirring. In addition, since the ceramic balls can be captured and recovered by the recovery means, the sensible heat accumulated in the ceramic balls is also recovered at the same time, so that it can be used again as a heat source for producing zeolite without dissipating the heat required for heating the ceramic balls. It becomes possible to apply.

  Moreover, the zeolite production apparatus of the present invention according to claim 4 is the zeolite production apparatus according to any one of claims 1 to 3, wherein the weight ratio of coal ash, alkali, and water is 1 for coal ash. The alkali is 0.05 to 0.15, the coal ash is 1 and the water is 1.0 to 1.8, and the pressure vessel contains slurry and water mixed with coal ash and an alkali solution. And the temperature control means controls the temperature of the pressure vessel so as to produce dried zeolite.

  In the present invention according to claim 4, by reducing the liquid-solid ratio, the minimum amount of alkali is reduced, thereby reducing the amount of water used as a solvent and the amount of alkali used as a chemical, and the amount of heat required for heating is reduced. Thus, a zeolite in a dry state can be produced. For this reason, waste water treatment becomes unnecessary and the produced zeolite can be handled as it is without being dried.

  Moreover, the zeolite manufacturing apparatus of this invention which concerns on Claim 5 is a zeolite manufacturing apparatus as described in any one of Claims 1-4. An alkali is sodium hydroxide (NaOH) and coal ash is thermal power. It is characterized by coal ash generated in a coal fired boiler or coal gasifier at a power plant.

  In this invention which concerns on Claim 5, while using the coal ash and sodium hydroxide (NaOH) of a power plant, while being able to utilize the waste heat and steam of a power plant, a chemical | medical agent can be shared, a zeolite The manufacturing power cost and the transportation cost of raw materials can be reduced.

  In order to achieve the above object, a power generation facility according to a sixth aspect of the present invention includes a boiler that generates steam by burning coal, a steam turbine that expands steam generated in the boiler to obtain power generation, and a steam turbine. The condensate water supply means for condensing exhaust steam that has finished work in the condensate and supplying the condensate to the boiler, and the zeolite production means for producing zeolite by reacting the coal ash and alkali of the boiler, A zeolite production | generation means is the zeolite manufacturing apparatus as described in any one of Claims 1-5.

  In the present invention according to claim 6, by using coal ash from the boiler and exhaust heat / steam in the system, zeolite that is easily solidified can be generated by continuous treatment, and from coal ash with low cost and simple equipment. The power generation facility is equipped with a zeolite production apparatus capable of producing zeolite.

  In order to achieve the above object, a power generation facility according to claim 7 of the present invention includes a gasification furnace for reacting coal to obtain fuel gas, combustion means for burning the fuel gas obtained in the gasification furnace, and combustion A gas turbine for generating power by expanding the combustion gas obtained by the means, heat recovery means for recovering the heat of the exhaust gas of the gas turbine, and gasifying slag of the gasifier is atomized to form fine ash The pulverizing means to be obtained and the zeolitic generating means for generating zeolite by reacting the ash and alkali obtained by the pulverizing means, wherein the zeolitic generating means is according to any one of claims 1 to 5. This is a zeolite production apparatus.

  In the present invention according to claim 7, the gasification slag of the gasification furnace is converted into fine ash by the microparticulation means, and is easily solidified by using the ash obtained by the microparticulation means and the exhaust heat / steam in the system. A power generation facility equipped with a zeolite production apparatus capable of generating zeolite by continuous processing and capable of generating zeolite from coal ash with simple equipment at low cost.

  The zeolite production apparatus of the present invention can produce zeolite from coal ash with simple equipment.

  The power generation facility of the present invention is a power generation facility including a zeolite production apparatus that can generate zeolite from coal ash with a simple facility.

  FIG. 1 shows the concept of a zeolite production apparatus according to an embodiment of the present invention, FIG. 2 shows a schematic cross section of the zeolite production apparatus, FIG. 3 shows the result of X-ray analysis strength of coal ash zeolite, and FIG. A comparison of the production conditions of ash zeolite is shown.

  A schematic configuration of the zeolite production apparatus will be described with reference to FIG.

  As shown in the figure, the zeolite production apparatus 5 of this embodiment includes a cylindrical pressure vessel 1 into which coal ash, alkali and water (alkaline solution) are introduced from one end side, and the pressure vessel 1 is a rotating means. 2 is rotated around the axis of the cylinder. Inside the rotating pressure vessel 1, a wet mixing process and a steam process using heat (temperature control means) are performed, and the mixture is transferred to the other end side.

  By the steam treatment with heat, the mixture reacts at a predetermined reaction temperature to produce zeolite, which is converted into coal ash zeolite and exhaust heat. A solidification preventing means 3 is provided inside the pressure vessel. The solidification preventing means 3 crushes and stirs the reactants inside the pressure vessel 1 to prevent solidification, and the reactants adhere to the inner wall of the pressure vessel 1. That is blocked.

  Therefore, the pressure vessel 1 is rotated by the rotation means 2, the inside of the pressure vessel 1 is controlled to a temperature atmosphere in which the mixture of coal ash, alkali and water is stirred and the zeolite is generated by the temperature control means, and the solidification prevention means. The coal ash zeolite is discharged from the other end of the pressure vessel while solidification inside the vessel is suppressed by 3. As a result, it is possible to produce zeolite that is easy to solidify by continuous treatment, and it is possible to produce zeolite from coal ash with simple equipment at low cost.

  The zeolite production apparatus 5 will be specifically described based on FIG.

  As shown in the figure, a cylindrical pressure vessel 1 into which coal ash and an alkali sodium hydroxide solution (NaOH solution: slurry) and water are introduced from one end side is provided, and the pressure from one end side to the other end side is provided. The container 1 is disposed so as to be rotatable around the axis of the cylinder in a state where the central axis of the container 1 is inclined. A ring gear 11 is fixed to the pressure vessel 1, and an output gear 13 of a drive motor 12 that is a rotating means 2 is engaged with the ring gear 11. By driving the drive motor 12, the pressure vessel 1 is rotated via the output gear 13 and the ring gear 11. By the rotation of the pressure vessel 1 arranged with the central axis inclined, the mixture inside the pressure vessel 1 is conveyed from one end side to the other end side.

  The pressure vessel 1 is provided with a temperature control means 14, and the mixture is reacted at a predetermined reaction temperature by the temperature control means 14 into a reaction product 17. That is, the temperature control unit 14 includes a heating unit 15 and a cold water spraying unit 16. When the inside of the pressure vessel 1 is heated to, for example, about 120 ° C. by the heating unit 15 and the evaporation becomes excessive, the cold water spraying is performed. Cold water is sprayed from the means 16 to suppress overheating of the reactant 17. Thereby, the inside of the pressure vessel 1 is maintained at a predetermined reaction temperature (for example, about 120 ° C.).

  The temperature control means 14 maintains the temperature inside the pressure vessel 1 so as to control the moisture evaporation state of the mixture to obtain an anhydrous zeolite as the reactant 17 (product). In order to obtain an anhydrous coal ash zeolite, the weight ratio of coal ash and NaOH and water is such that coal ash is 1 to NaOH is 0.05 to 0.15 and coal ash is 1 to water From 1.0 to 1.8.

  A large number of ceramic balls 18 (for example, mullite, zirconia, etc.) are placed in advance in the pressure vessel 1 as solidification preventing means, and the ceramic balls 18 move inside the pressure vessel 1 as the pressure vessel 1 rotates. As the pressure vessel 1 rotates, the ceramic ball 18 moves, whereby the reactant 17 as a mixture is crushed and stirred, so that the temperature of the reactant 17 becomes uniform and the reforming reaction is promoted. . As the ceramic ball 18 moves, solidification of the reactant 17 is prevented and adhesion of the reactant 17 to the wall surface is inhibited.

  A recovery means 19 is provided at the outlet (the other end side) of the pressure vessel 1, and the ceramic balls 18 that are transported and discharged together with the reactant 17 are captured and recovered by the recovery means 19. The recovery means 19 is constituted by, for example, a mesh sieve through which only the reactant 17 passes. The sensible heat accumulated in the ceramic balls 18 captured by the recovery means 19 is recovered as a heat source for heating the pressure vessel 1.

  As the solidification preventing means, means for forcibly transferring the reactant 17 by driving and rotating the screw, means for transferring the reactant 17 while stirring by driving and rotating a screw-shaped stirring blade member, etc. are used. It is possible. Further, when a large number of ceramic balls 18 and a screw shaft member having a sieving function are combined and the reactant 17 is transferred to the other end side by the rotation of the pressure vessel 1, relative rotation (drive rotation) of the screw shaft member is performed. It is also possible to provide means for moving and collecting the ceramic ball 18 to one end side.

  On the other end side of the pressure vessel 1, the ceramic balls 18 are captured by the collecting means 19, and the reactant 17, that is, the dried coal ash zeolite is collected in the vessel 20. Since the coal ash zeolite recovered in the container 20 is a dry product, it can be obtained as a product that can be transported through a bagging process.

  In the above-described zeolite production apparatus 5, the pressure vessel 1 is rotated by the drive motor 12, and the mixture of coal ash, NaOH and water is crushed and stirred by the movement of the ceramic ball 18, and the heating means 15 and the cold water spray means 16 are used to zeolite. The inside of the pressure vessel 1 is controlled to a temperature atmosphere that generates Thereby, solidification of the mixture is suppressed and adhesion of the mixture to the wall surface of the pressure vessel 1 is prevented, and the dried coal ash zeolite is discharged from the other end of the pressure vessel 1. Therefore, it is possible to produce coal ash zeolite that is easily solidified by continuous treatment, and it is possible to produce zeolite from coal ash with low cost and simple equipment.

  In addition, by reducing the liquid-solid ratio, the minimum amount of NaOH is reduced, so the amount of water used as a solvent and the amount of NaOH used as a chemical agent are reduced, the amount of heat required for heating is reduced, and the dry coal ash is reduced. Zeolite can be produced. For this reason, waste water treatment becomes unnecessary and the produced zeolite can be handled as it is without being dried. Moreover, sludge treatment can be eliminated.

  It is conceivable that the mixture is overheated due to the reduced solid-liquid ratio. When reforming proceeds under conditions where the mixture is superheated, there is a risk that by-products (for example, analcime) different from coal zeolite are generated. In the zeolite production apparatus 5, since the overheating is suppressed by the cold water spraying means 16, the production rate of by-products is reduced and controlled so that no by-products are produced.

  Based on FIG. 3, the production | generation condition of a zeolite is demonstrated.

  The X-ray analysis intensity of the coal ash zeolite manufactured by the above-described zeolite manufacturing apparatus 5 is indicated by a solid line, and the X-ray analysis intensity of the coal ash zeolite manufactured by the conventional hydrothermal synthesis method is indicated by a dotted line. The reaction time is equivalent.

  Comparing the amount of zeolite (NaP1) produced, the coal ash zeolite (◯) produced by the zeolite production apparatus 5 has an analytical strength of about 90% of the coal ash zeolite (●) produced by the hydrothermal synthesis method. It can be seen that substantially the same coal ash zeolite as the crystal structure is obtained.

  For this reason, the coal ash zeolite produced by the zeolite production apparatus 5 is an ion-exchange functional material that adsorbs and removes heavy metals contained in wastewater, etc., odor removal that is a causative substance of sick house, and eutrophic salt (phosphorus) It can be used as an adsorptive functional material for removing acid salt).

  In order to obtain the coal ash zeolite shown in FIG. 3, the conditions 1 to 3 shown in FIG. 4 are applicable, for example. That is, in order to obtain anhydrous coal ash zeolite, the weight ratio of coal ash, NaOH, and water was changed from 0.05 to 0.15 for coal ash to 1, and 0.1 to 0.15 for coal ash. The condition can be set in a range from 1.0 to 1.8.

  Condition 1 is that the raw material coal ash is 100 (g), NaOH is 10 (g), the base concentration is 1.8 (mol / l), and the water content is 140 (g). Coal ash) is 1, NaOH is 0.10, and water is 1.4.

  Condition 2 is that the raw material coal ash is 100 (g), NaOH is 8 (g), the base concentration is 1.3 (mol / l), and the water content is 160 (g). Coal ash) is 1, NaOH is 0.08, and water is 1.6.

  Condition 3 is that the raw material coal ash is 100 (g), NaOH is 12 (g), the base concentration is 2.5 (mol / l), and the water content is 120 (g). Coal ash) is 0.1, NaOH is 0.12, and water is 1.2.

  When coal ash zeolite is produced under conditions 1 to 3, that is, coal ash zeolite that is easy to solidify is produced by continuous treatment, and zeolite is produced from coal ash with low cost and simple equipment. Coal produced by hydrothermal synthesis method even when the dry amount of coal ash zeolite is produced by reducing the amount of NaOH used as the minimum amount of water and chemicals by reducing the amount of heat required for heating and reducing the amount of heat required for heating It has been confirmed that coal ash zeolite having a crystal structure substantially equivalent to ash zeolite can be obtained.

  For this reason, it becomes possible to obtain dry zeolite without the need for wastewater treatment and sludge treatment. When obtaining coal ash zeolite from waste coal ash, new waste is discharged to the environment. Without waste, the waste can be effectively used in an environmentally friendly state.

  Conditions 4 and 5 for obtaining equivalent coal ash zeolite will be described as comparative examples.

  Condition 4 is a condition considered as a standard for the hydrothermal synthesis method. The raw material coal ash is 100 (g), NaOH is 40 (g), the base concentration is 2.5 (mol / l), and the water content is 400. (G), and the weight ratio of the raw material (coal ash) is 1, the NaOH is 0.40, and the water is 4.0.

  Condition 5 shows the conditions of the technique shown in Patent Documents 1 and 2 shown in the background art, and coal ash as a raw material is 20 (g), NaOH is 4.8 (g), The base concentration is 1.5 (mol / l), the water content is 80 (g), and the weight ratio is 1 for raw material (coal ash), 0.24 for NaOH, and 4.0 for water. Since the technology of the patent document reuses alkali, it is considered that the actual amount of alkali used increases.

  Conditions 4 and 5 require about 4 times the amount of NaOH used and about 3 times the amount of water used to obtain an equivalent coal ash zeolite. In other words, using the zeolite production apparatus 5, the weight ratio of coal ash, NaOH, and water is changed from 0.05 to 0.15 for coal ash with respect to 1 and 1 for water with respect to 1 for coal ash. By setting conditions in the range of 0.0 to 1.8 and obtaining an anhydrous coal ash zeolite, the amount of NaOH used can be reduced to about 1/4 and the amount of water used can be reduced to about 1/3. .

  For this reason, when obtaining a coal ash zeolite having a quality substantially equivalent to that of the coal ash zeolite obtained by the conventional hydrothermal synthesis method, it is possible to avoid waste recycling and eliminate the cost of processing. In addition, the amount of the chemicals used and the chemicals can be greatly reduced, and the production apparatus and production power can be greatly reduced. Therefore, it is possible to effectively use the coal ash which is a waste with no burden on the environment while greatly reducing the initial cost and the running cost. In particular, since it can be converted to adsorbents used to remove phosphates, etc., which are eutrophic salts of marine sludge, the environmental load in manufacturing and the environmental load in sludge treatment are combined. In contrast, it will be a much superior technology and will be extremely environmentally friendly.

  A power generation facility provided with the above-described zeolite production apparatus 5 will be described with reference to FIGS. FIG. 5 shows a schematic system of the power generation facility according to the first embodiment of the present invention, and FIG. 6 shows a schematic system of the power generation facility according to the second embodiment of the present invention.

  A first embodiment of the power generation facility will be described with reference to FIG.

  As shown in the figure, a boiler 21 for generating steam by burning coal is provided, and the steam generated in the boiler 21 is introduced into a steam turbine 22. In the steam turbine 22, the steam from the boiler 21 is expanded to obtain power generation power, and the exhaust steam that has finished work in the steam turbine 22 is condensed in the condenser 23. Condensate from the condenser 23 is supplied to the boiler 21 by a water supply pump 24 (condensate water supply means).

  Exhaust gas from the boiler 21 is denitrated by a denitration device 25 and ash is separated by an electric dust collector 26, desulfurized by a desulfurization device 27, and released to the atmosphere. And the zeolite manufacturing apparatus 5 (refer FIG. 2) to which the fly ash (coal ash) isolate | separated with the electric dust collector 26 is sent is provided, and the coal ash which is the waste generated within the system of a power generation system is the zeolite manufacturing apparatus 5 It is considered as a raw material. Further, a part of the steam of the boiler 21, a part of the water supply, and a part of the heat are sent to the temperature control means (temperature control means 14 in FIG. 2) of the zeolite production apparatus 5, and the energy generated in the system of the power generation system Is the energy of the zeolite production apparatus 5.

  In the above-described power generation facility, zeolite that is easily solidified can be generated by continuous processing using coal ash from the boiler 21 and exhaust heat / steam in the system of the power generation system. For this reason, it is possible to share the chemicals by effectively using the waste heat of the power plant, reduce the transportation cost, etc., and generate zeolite from coal ash with low cost and simple equipment. A power generation facility equipped with a zeolite production apparatus.

  A second embodiment of the power generation facility will be described based on FIG.

  As shown in the figure, a gasification furnace 31 that reacts coal to obtain fuel gas is provided, and the fuel gas obtained in the gasification furnace 31 is sent to a combustor 32 (combustion means) of a gas turbine. In the combustor 32, the compressed air and fuel gas compressed by the compressor 33 are combusted, and the combustion gas obtained by the combustor 32 is expanded by the turbine 34 to obtain power generation. The exhaust gas that has finished work in the turbine 34 is recovered by the exhaust heat recovery boiler (HRSG) 35 and released to the atmosphere. In the HRSG 35, for example, steam is generated by exhaust heat and is sent to a steam turbine (not shown), and condensate of exhaust steam is supplied.

  And the zeolite production apparatus 5 (refer FIG. 2) to which the ash content in the coal collect | recovered with the gasification furnace 31 is sent is provided, and the coal ash which is the waste generated within the system of a power generation system is the zeolite production apparatus 5's. Made as a raw material. Since the ash is obtained as a glassy solid body (glass slag) in the gasification furnace 31, the gasification furnace 31 is provided with fine particle means 36 for obtaining fine particle ash by making the gasification slag (coal gasification slag) of the gasification furnace into fine particles. ing. For example, a device that melts coal gasification slag, ejects molten slag and ejects fluid, and refines the coal gasification slag by a fluid atomizing method is applied to the fine particle generation means 36.

  Further, a part of the steam of HRSG 35, a part of the water supply, and a part of the heat are sent to the temperature control means (temperature control means 14 in FIG. 2) of the zeolite production apparatus 5, and the energy generated in the system of the power generation system is The energy of the zeolite production apparatus 5 is used.

  In the power generation facility described above, zeolite that is easily solidified can be generated by continuous processing using the coal ash recovered in the gasification furnace 31 and the exhaust heat / steam in the system of the power generation system. For this reason, it is possible to share the chemicals by effectively using the waste heat of the power plant, reduce the transportation cost, etc., and generate zeolite from coal ash with low cost and simple equipment. A power generation facility equipped with a zeolite production apparatus.

  INDUSTRIAL APPLICATION This invention can be utilized in the industrial field | area of the power generation equipment provided with the zeolite manufacturing apparatus which produces | generates a zeolite from coal ash, and a zeolite manufacturing apparatus.

It is a conceptual diagram of the zeolite manufacturing apparatus which concerns on the example of 1 embodiment of this invention. It is a schematic sectional drawing of a zeolite manufacturing apparatus. It is a graph showing the result of the X-ray analysis intensity of coal ash zeolite. It is a table | surface figure which shows the comparison of the manufacturing conditions of coal ash zeolite. 1 is a schematic system diagram of a power generation facility according to a first embodiment of the present invention. It is a schematic system diagram of the power generation equipment according to the second embodiment of the present invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Pressure vessel 2 Turning means 3 Solidification prevention means 5 Zeolite production apparatus 11 Ring gear 12 Drive motor 13 Output gear 14 Temperature control means 15 Heating means 16 Cooling water spray means 17 Reactant 18 Ceramic ball 19 Recovery means 20 Container 21 Boiler 22 Steam Turbine 23 Condenser 24 Water supply pump 25 Denitration device 26 Electric dust collector 27 Desulfurization device 31 Gasifier 32 Combustor 33 Compressor 34 Turbine 35 Waste heat recovery boiler (HRSG)
36 Particulate making means

Claims (7)

A cylindrical pressure vessel into which coal ash, alkali and water are charged from one end side;
A rotating means for rotating the pressure vessel around the axis of the cylinder to transfer the mixture to the other end side and discharging the product from the other end;
Temperature control means for producing zeolite by maintaining the inside of the pressure vessel at a predetermined reaction temperature and reacting the mixture;
And a solidification inhibiting means for inhibiting the solidification of the reactant inside the pressure vessel. In the zeolite production apparatus according to claim 1,
The temperature control means is a means for obtaining an anhydrous zeolite as a product by controlling the temperature at which the moisture evaporation state of the mixture reaches a predetermined state. In the zeolite production apparatus according to claim 1 or 2,
The solidification preventing means is a large number of ceramic balls put into the pressure vessel, and the mixture is crushed and stirred by moving the ceramic balls by the rotation of the pressure vessel by the turning means,
A zeolite production apparatus characterized in that a recovery means for capturing and recovering only the ceramic balls is provided on the outlet side of the pressure vessel. In the zeolite production apparatus according to any one of claims 1 to 3,
The weight ratio of coal ash and alkali and water is 0.05 to 0.15 alkali for 1 coal ash, 1.0 to 1.8 water for 1 coal ash,
The pressure vessel is charged with slurry and water mixed with coal ash and alkaline solution,
In the temperature control means, the temperature of the pressure vessel is controlled so as to produce dried zeolite. In the zeolite production apparatus according to any one of claims 1 to 4,
The alkali is sodium hydroxide (NaOH)
A zeolite production apparatus characterized in that the coal ash is coal ash generated in a coal fired boiler or coal gasifier of a thermal power plant. A boiler that generates steam by burning coal;
A steam turbine for generating power by expanding the steam generated in the boiler;
Condensate water supply means for condensing exhaust steam that has finished work with a steam turbine into condensate and supplying the condensate to the boiler;
Comprising a zeolite production means for producing zeolite by reacting coal ash and alkali of a boiler,
The power generation equipment, wherein the zeolite production means is the zeolite production apparatus according to any one of claims 1 to 5. A gasification furnace for reacting coal to obtain fuel gas;
Combustion means for burning the fuel gas obtained in the gasifier,
A gas turbine for generating power by expanding the combustion gas obtained by the combustion means;
Heat recovery means for recovering heat of the exhaust gas of the gas turbine;
A microparticulation means for microparticulating gasification slag of a gasification furnace to obtain fine ash,
A zeolite production means for producing zeolite by reacting the ash and alkali obtained by the fine particle means;
The power generation equipment, wherein the zeolite production means is the zeolite production apparatus according to any one of claims 1 to 5.

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